The STM32F303RCT6TR: The 72 MHz core with a single-cycle multiply and hardware FPU handles sensor fusion and PID loops. The 22-channel 12-bit ADC and 2-channel 12-bit DAC support analog control loops. The 40 KB SRAM is enough for moderate data buffers and RTOS task stacks.
Connectivity and peripherals — CANbus, USB, and the analog front end
On the communication side, the STM32F303RCT6TR includes CANbus (2.0B active), USB (device mode), and multiple SPI/I²C/UART/USART interfaces. The DMA controller offloads data transfers for these peripherals, reducing CPU load. Internal POR and PWM timers are present, along with a watchdog timer. The oscillator is internal, so no external crystal is needed for basic operation, though an external clock can be used for tighter accuracy.